Leafy vegetable that's eaten in chip form, often

Pigeon's sound3 Metropolitan ride for hire3 The "O" of IOU3 Hooter at night3 Gradually subside, as the tide3 Wipe, as chalk from the blackboard5 "___ Burgers," animated sitcom created by Loren Bouchard4 "Sherlock" and "Doctor Who" airer: Abbr.3